Merge branch 'add_windows_ci' into dev

Gemfile

@@ -8,4 +8,8 @@ if RUBY_VERSION =~ /^1\./
   gem 'tins', '< 1.7' # The 'tins' gem requires Ruby 2.x on/after this version
   gem 'json', '< 2.0' # The 'json' gem drops pre-Ruby 2.x support on/after this version
   gem 'term-ansicolor', '< 1.4' # The 'term-ansicolor' gem requires Ruby 2.x on/after this version
+
+  if RbConfig::CONFIG['host_os'].downcase =~ /mswin|msys|mingw32/
+    gem 'ffi', '< 1.9.15' # The 'ffi' gem, for Windows, requires Ruby 2.x on/after this version
+  end
 end

appveyor.yml

@@ -0,0 +1,43 @@
+version: '1.0.{build}'
+
+environment:
+  matrix:
+    - CHILDPROCESS_POSIX_SPAWN: true
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 193-x64
+    - CHILDPROCESS_POSIX_SPAWN: false
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 193-x64
+    - CHILDPROCESS_POSIX_SPAWN: true
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 200-x64
+    - CHILDPROCESS_POSIX_SPAWN: false
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 200-x64
+    - CHILDPROCESS_POSIX_SPAWN: true
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 21-x64
+    - CHILDPROCESS_POSIX_SPAWN: false
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 21-x64
+    - CHILDPROCESS_POSIX_SPAWN: true
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 22-x64
+    - CHILDPROCESS_POSIX_SPAWN: false
+      CHILDPROCESS_UNSET: should-be-unset
+      RUBY_VERSION: 22-x64
+
+
+install:
+  - set PATH=C:\Ruby%RUBY_VERSION%\bin;%PATH%
+  - bundle install
+
+build: off
+
+before_test:
+  - ruby -v
+  - gem -v
+  - bundle -v
+
+test_script:
+  - bundle exec rake